When assigning someone a booking in the Resource planner, they may already have a time-off existing booking during that time, which can result in overbooking. But don’t worry—there’s a simple solution.

For example, if there's a time-off booking (Sick leave) from September 9 to September 20, and you attempt to add a new project or time-off booking during that period, a window will appear prompting you to resolve the conflict.

If you choose to resolve the conflict, the Resource planner will prevent the creation of a new booking.

Admins can toggle the booking conflict resolver on or off under Settings > Resourcing.

If this feature is turned off, overbooking becomes possible, allowing you to assign multiple bookings (project or time-off) for the same time period.